As the interfertility of oranges and other citrus has produced numerous hybrids, bud unions, and cultivars, their taxonomy is fairly controversial, confusing or inconsistent. The fruit of any citrus tree is considered a hesperidium (a kind of modified berry) because it has numerous seeds, is fleshy and soft, derives
Wasps and many bees can sting more than once because they are able to pull out their stinger without injuring themselves. Only honeybees have special hooks on their stinger that keep the stinger in the skin after a person is stung. The stinger gets torn out of the bee’s body as it tries to fly away.